CN109916640A - A kind of automobile tire operational modal test device - Google Patents
A kind of automobile tire operational modal test device Download PDFInfo
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- CN109916640A CN109916640A CN201910248208.8A CN201910248208A CN109916640A CN 109916640 A CN109916640 A CN 109916640A CN 201910248208 A CN201910248208 A CN 201910248208A CN 109916640 A CN109916640 A CN 109916640A
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Abstract
The invention discloses a kind of test devices of automobile tire operational modal, including pedestal, driving motor, tire on the drive wheels, excitation stick and laser vibration measurer, the top surface of pedestal is the first workbench, backing plate is fixed on first workbench, driving motor is fixed on pad surfaces, tire on the drive wheels is mounted on the output shaft of driving motor, and excitation stick both ends are connected with elastic string, is fixedly connected in the middle part of the elastic string other end and tire on the drive wheels；Tire to be measured is fixed on the leading flank of pedestal, applies the load that real vehicle state tire is subject to tire to be measured by tire on the drive wheels；The leading flank of pedestal is equipped with reflective mirror, and circumferentially along tire to be measured, laser vibration measurer is arranged in the front of tire to be measured by tripod to reflective mirror, and height is equal with the mirror surface centre-height of reflective mirror.It can simulate load of the tire under real vehicle state, the tire operational modal under validity test friction speed, different loads, different sizes or different excitations.
Description
Technical field
The present invention relates to auto NVH performances, and in particular to a kind of automobile tire operational modal test device.
Background technique
The vibration noise of tire is NVH with reduction tire vibration noise as one of Vehicle Interior Noise source, research
An important process.The current country is mainly static test for the test of tire mode, i.e., tire is in the state not rotated
Lower its mode of test.According to the difference of boundary condition, free state mode and restrained condition mode can be divided into.
Existing test method is to arrange acceleration transducer in surface of tyre, is swashed using hammering or vibration excitor
It encourages, obtains the mode of tire.The test method can be monitored the static mode of tire, experimental condition favorable repeatability,
Relatively there is important value for the mode of different sized tyres, the Modal Performances that can be used for tire monomer are checked and accepted.But it can only
Test analysis is carried out to the static mode of tire, mode of the tire under real vehicle operating status cannot be tested, for being transported by tire
Vibration noise problem lacks practical significance caused by row mode.
CN207300595U discloses a kind of novel tire Constrained mode test device, including the rack of tire is arranged, uses
In the jack from load to the tire, the load transmission for fixing the tire and applying the jack to institute that apply
State the rigidity rope on tire, the force snesor for monitoring the tire force and for testing the tire vibration mode signals
Acceleration transducer, the jack is fixed on the rack, the extending direction of the central axis of the tire with
The Impact direction of the tire is perpendicular.The test device structure is simple, easy to use, can accurate simulation tire in real vehicle shape
Stress condition under state, and frequency, the vibration shape and damping of the tire under Constrained mode can be tested.Although simulating tire in reality
Stress condition under car state, but still be to be in the mode under static conditions in tire, validity test tire is unable in real vehicle
Mode under operating status.
Summary of the invention
The object of the present invention is to provide a kind of test devices of automobile tire operational modal, can simulate tire in real vehicle
Load under state, the tire operational modal under validity test friction speed, different loads, different sizes or different excitations.
Automobile tire operational modal test device of the present invention, including pedestal, driving motor, tire on the drive wheels, excitation
Stick and laser vibration measurer, the top surface of the pedestal are the first workbench, are fixed with backing plate, the driving motor on the first workbench
Pad surfaces are fixed on, the tire on the drive wheels is mounted on the output shaft of driving motor, and the excitation stick both ends connection is flexible
It is fixedly connected in the middle part of rope, the elastic string other end and tire on the drive wheels, stick is motivated to be tightly attached to driving by the tensile force of elastic string
On the tyre surface of tire；The leading flank of the pedestal is the second workbench, and tire to be measured is fixed on the second workbench, passes through driving
Tire applies the load that real vehicle state tire is subject to tire to be measured；Second workbench is equipped with reflective mirror, described reflective
Circumferentially along tire to be measured, the laser vibration measurer is arranged in the front of tire to be measured by tripod to mirror, height with it is anti-
The mirror surface centre-height of light microscopic is equal.
Further, first workbench is equipped with a plurality of first sliding groove parallel with pedestal leading flank, the backing plate bottom
Face is equipped with the first sliding block with first sliding groove corresponding matching, and backing plate can move under the drive of the first sliding block along first sliding groove or so
It is dynamic.
Further, the tire to be measured is fixed on the second workbench by the first mounting bracket, second workbench
Middle part is equipped with the second sliding slot vertical with first sliding groove, and first mounting bracket is equipped with second with second sliding slot corresponding matching
Sliding block, the first mounting bracket can move up and down under the drive of the second sliding block along second sliding slot.
Further, force sensor is fixed in first mounting bracket, for measuring the load of tire to be measured.
Further, second workbench is equipped with mounting plate, and the mounting plate, which is equipped with, holds the appearance that tire to be measured passes through
Notch is set, multiple groups are equipped with around accommodating notch and are used to fix the mounting hole of the second mounting bracket, the reflective mirror is fixed on the
In two mounting brackets.
Further, the reflective mirror includes eyeglass and the clip-connecting rod that connect with eyeglass, and second mounting bracket is equipped with
The blocked hole being rotatably assorted with clip-connecting rod, by rotating the angular adjustment that eyeglass realizes reflective mirror around clip-connecting rod.
Further, the diameter of the excitation stick is 5mm, 10mm, 15mm or 20mm.
Compared with prior art, the present invention has the following advantages:
1, tire on the drive wheels is mounted on the output shaft of driving motor by the present invention, and driving motor is fixed on the first workbench of pedestal
Pad surfaces, tire to be measured is fixed on the second workbench of pedestal, adjust the relative position of tire on the drive wheels and tire to be measured,
So that tire on the drive wheels applies certain load to tire to be measured, and then real simulation stress feelings of the tire to be measured under real vehicle state
Condition increases operational modal test result accuracy.
2, the present invention drives tire to be measured with certain speed operation by tire on the drive wheels, using laser vibration measurer measure to
The operational modal of tire to be measured is calculated by model analysis software for the vibration message of each model points of measuring wheel tire, and it is convenient to operate.
By replacing the excitation stick of various sizes of tire, different-diameter and adjusting the different speeds of service, can effectively measure each
Operational modal of the tire of kind size under different operating conditions, meets tire correspondingly testing requirement.
3, the configuration of the present invention is simple, it is practical.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the partial enlarged view of Fig. 1；
Fig. 3 is the front view of the second workbench of the invention；
Fig. 4 is the structural schematic diagram of reflective mirror of the invention；
Fig. 5 is the simplified model figure of tire to be measured of the invention；
Fig. 6 is one of the operational modal schematic diagram of tire to be measured of the invention；
Fig. 7 is the two of the operational modal schematic diagram of tire to be measured of the invention.
In figure, 1-pedestal, 2-driving motors, 3-tires on the drive wheels, 4-excitation sticks, 5-laser vibration measurers, 51-light
Beam, 6-tires to be measured, 7-backing plates, 8-mounting plates, 81-mounting holes, the 9-the first mounting bracket, the 10-the second mounting bracket,
11-tripods, 12-first sliding grooves, 13-second sliding slots, 14-reflective mirrors, 15-eyeglasses, 16-clip-connecting rods, 17-elasticity
Rope.
Specific embodiment
It elaborates with reference to the accompanying drawing to the present invention.
Referring to Fig. 1 and Fig. 2, automobile tire operational modal test device shown in, including pedestal 1, driving motor 2, driving
Tire 3, excitation stick 4 and laser vibration measurer 5.A length of 1800mm of the pedestal 1, width 1800mm, a height of 1500mm, top surface is
First workbench is fixed with backing plate 7 on the first workbench, is equipped on the first workbench a plurality of parallel with 1 leading flank of pedestal
First sliding groove 12,7 bottom surface of backing plate are equipped with the first sliding block with 12 corresponding matching of first sliding groove, and the first sliding groove 12 is in
T shape, first sliding block are the bolt for being bolted in 7 bottom surface of backing plate, the bolt head of the bolt and the transverse direction of inverted T-shaped first sliding groove 12
The vertical section of Duan Peihe, screw rod and inverted T-shaped first sliding groove 12 cooperates, and backing plate 7 can be along first sliding groove 12 under the drive of bolt
It moves left and right.The driving motor 2 is fixed on 7 surface of backing plate, and the tire on the drive wheels 3 is mounted on the output shaft of driving motor 2,
2 revolving speed of driving motor is adjustable, guarantees that the tire on the drive wheels speed of minimum diameter can reach 60km/h.By moving left and right backing plate 7
Position drives driving motor 2 to move left and right, realizes the adjusting of 3 left-right position of tire on the drive wheels, by the pad for replacing different-thickness
Plate 7 realizes the adjusting of 3 upper and lower position of tire on the drive wheels, by adjusting installation site of the driving motor 2 on backing plate 7, realizes
The adjusting of 3 front-rear position of tire on the drive wheels.
The diameter of the excitation stick is 5mm, 10mm, 15mm or 20mm, selects respective straight according to different excitation requirements
The excitation stick 4 of diameter.Excitation 4 both ends of stick are connected with elastic string 17, fixed company in the middle part of 17 other end of elastic string and tire on the drive wheels 3
It connects, excitation stick 4 is tightly attached on the tyre surface of tire on the drive wheels 3 by the tensile force of elastic string 17.Test was both ensure that using elastic string
The tyre surface of tire on the drive wheels 3 does not occur to slide relatively with excitation stick 4 in the process, while versatile, can be suitable for different sizes
Tire on the drive wheels 3 assembly demand, according to rigidity rope come constant excitation stick 4, then need the size according to tire on the drive wheels 3, if
The rigidity rope of meter corresponding length motivates stick 4, poor universality to connect.
The leading flank of the pedestal 1 is the second workbench, and the tire 6 to be measured is fixed on the by the first mounting bracket 9
On two workbench, force sensor is fixed in first mounting bracket 9, for measuring the load of tire 6 to be measured.Described second
The second sliding slot 13 vertical with first sliding groove 12 is equipped in the middle part of workbench, first mounting bracket 9 is equipped with and second sliding slot 13
Second sliding block of corresponding matching, second sliding slot 13 are in inverted T-shaped, and the second sliding block is to be bolted in bolt in the first mounting bracket 9, are passed through
Bolt and inverted T-shaped second sliding slot 13 cooperate, and the first mounting bracket 9 can be moved up and down along second sliding slot 13, adaptation to measuring wheel
The diameter of tire 6 is 550 ~ 800mm.When specific test, the relative position of tire on the drive wheels 3 and tire to be measured 6 is adjusted, it is ensured that driving wheel
Tire 3 is in the surface of detected tyre 6, and the rotary shaft of tire on the drive wheels 3 and tire to be measured 6 is substantially parallel and sidewall face is same flat
Face, from the magnitude of load that applies to tire 6 to be measured of force snesor confirmation tire on the drive wheels 3, when load and tire 6 to be measured are in real vehicle shape
When load under state is identical, fixed tire on the drive wheels 3 and tire to be measured 6 carry out follow-up test.
Second workbench is equipped with mounting plate 8, and the mounting plate 8 is equipped with the accommodating that appearance tire 6 to be measured passes through and lacks
Mouthful, it is equipped with multiple groups around accommodating notch and is used to fix the mounting hole of the second mounting bracket 10, in second mounting bracket 10
It is fixed with reflective mirror 14, referring to fig. 4, the reflective mirror 14 includes eyeglass 15 and the clip-connecting rod 16 that connect with eyeglass 15, and described the
Two mounting brackets 10 are equipped with the blocked hole being rotatably assorted with clip-connecting rod 16, reflective by realizing around the rotation eyeglass 15 of clip-connecting rod 16
The angular adjustment of mirror 14.
Laser vibration measurer 5 is arranged at the front 2m of tire 6 to be measured by tripod 11, the mirror of height and reflective mirror 14
Face centre-height is equal.Issue light beam 51 using laser vibration measurer 5, the light beam 51 by the transmitting of reflective mirror 14 test obtain to
The vibration information of measuring wheel tire 6.
6 sidewall node vibrations information of tire to be measured directly passes through the test of laser vibration measurer 5 and obtains, referring to Fig. 5, shown in
Measuring wheel tire simplifies gridding methods, starts driving motor 2, is believed by the vibration that laser vibration measurer 5 measures each model points of tire 6 to be measured
Breath, referring to Fig. 6 and Fig. 7, shown under difference operating condition tire 6 to be measured operational modal.
The test device can operational modal of the various sizes of tire of validity test under different operating conditions, structure is simple,
It is convenient to operate, practical.
Claims (7)
1. a kind of automobile tire operational modal test device, it is characterised in that: including pedestal (1), driving motor (2), driving wheel
Tire (3), excitation stick (4) and laser vibration measurer (5), the top surface of the pedestal (1) are the first workbench, are fixed on the first workbench
Have backing plate (7), the driving motor (2) is fixed on backing plate (7) surface, and the tire on the drive wheels (3) is mounted on driving motor (2)
On output shaft；Excitation stick (4) both ends are connected with elastic string (17), in the middle part of elastic string (17) other end and tire on the drive wheels (3)
It is fixedly connected, excitation stick (4) is tightly attached on the tyre surface of tire on the drive wheels (3) by the tensile force of elastic string (17)；
The leading flank of the pedestal (1) is the second workbench, and tire (6) to be measured is fixed on the second workbench, passes through driving wheel
Tire (3) applies the load that real vehicle state tire is subject to tire to be measured (6)；
Second workbench be equipped with reflective mirror (14), the reflective mirror (14) along tire to be measured (6) circumferentially, it is described swash
Flash ranging Vibration Meter (5) is arranged in the front of tire to be measured (6), the mirror surface center of height and reflective mirror (14) by tripod (11)
It is highly equal.
2. automobile tire operational modal test device according to claim 1, it is characterised in that: on first workbench
Equipped with a plurality of first sliding groove (12) parallel with pedestal (1) leading flank, backing plate (7) bottom surface is equipped with right with first sliding groove (12)
The first sliding block that should cooperate, backing plate (7) move left and right under the drive of the first sliding block along first sliding groove (12).
3. automobile tire operational modal test device according to claim 1 or 2, it is characterised in that: the tire to be measured
(6) it is fixed on the second workbench by the first mounting bracket (9), is equipped with and first sliding groove (12) in the middle part of second workbench
Vertical second sliding slot (13), first mounting bracket (9) are equipped with the second sliding block with second sliding slot (13) corresponding matching, the
One mounting bracket (9) moves up and down under the drive of the second sliding block along second sliding slot (13).
4. automobile tire operational modal test device according to claim 3, it is characterised in that: first mounting bracket
(9) force sensor is fixed on, for measuring the load of tire to be measured (6).
5. automobile tire operational modal test device according to claim 1 or 2, it is characterised in that: second work
Platform is equipped with mounting plate (8), and the mounting plate (8), which is equipped with, holds the accommodating notch that tire (6) to be measured passes through, in accommodating notch week
It encloses and is equipped with the mounting hole (81) that multiple groups are used to fix the second mounting bracket (10), the reflective mirror (14) is fixed on the second installation branch
On frame (10).
6. automobile tire operational modal test device according to claim 5, it is characterised in that: reflective mirror (14) packet
The clip-connecting rod (16) for including eyeglass (15) and connecting with eyeglass (15), second mounting bracket (10) are equipped with and clip-connecting rod (16)
The blocked hole being rotatably assorted, by the angular adjustment for realizing reflective mirror (14) around clip-connecting rod (16) rotation eyeglass (15).
7. automobile tire operational modal test device according to claim 1 or 2, it is characterised in that: the excitation stick (4)
Diameter be 5mm, 10mm, 15mm or 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910248208.8A CN109916640A (en) | 2019-03-29 | 2019-03-29 | A kind of automobile tire operational modal test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910248208.8A CN109916640A (en) | 2019-03-29 | 2019-03-29 | A kind of automobile tire operational modal test device |
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| Publication Number | Publication Date |
|---|---|
| CN109916640A true CN109916640A (en) | 2019-06-21 |
Family
ID=66967651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910248208.8A Pending CN109916640A (en) | 2019-03-29 | 2019-03-29 | A kind of automobile tire operational modal test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109916640A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111189598A (en) * | 2019-12-31 | 2020-05-22 | 中汽研汽车检验中心（天津）有限公司 | Free modal test method for car wheel |
| CN114486294A (en) * | 2022-01-24 | 2022-05-13 | 宁波中大力德智能传动股份有限公司 | Driving wheel load loading testing device |
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| SU1204993A1 (en) * | 1984-08-16 | 1986-01-15 | Adamiya Robert Sh | Bed for testing pneumatic tyres |
| CN106908254A (en) * | 2015-12-22 | 2017-06-30 | 上海汽车集团股份有限公司 | Tire vibration experimental rig |
| US20170301103A1 (en) * | 2016-04-19 | 2017-10-19 | Butler Engineering And Marketing S.P.A. | Device and method for the analysis and detection of geometrical features of an object |
| CN107607332A (en) * | 2017-09-19 | 2018-01-19 | 清华大学苏州汽车研究院（相城） | A kind of novel tire Constrained mode test device |
| CN109238749A (en) * | 2018-09-05 | 2019-01-18 | 浦林成山（青岛）工业研究设计有限公司 | A kind of hammering device applied to Tire Modal Testing |
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2019
- 2019-03-29 CN CN201910248208.8A patent/CN109916640A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1204993A1 (en) * | 1984-08-16 | 1986-01-15 | Adamiya Robert Sh | Bed for testing pneumatic tyres |
| CN106908254A (en) * | 2015-12-22 | 2017-06-30 | 上海汽车集团股份有限公司 | Tire vibration experimental rig |
| US20170301103A1 (en) * | 2016-04-19 | 2017-10-19 | Butler Engineering And Marketing S.P.A. | Device and method for the analysis and detection of geometrical features of an object |
| CN107607332A (en) * | 2017-09-19 | 2018-01-19 | 清华大学苏州汽车研究院（相城） | A kind of novel tire Constrained mode test device |
| CN109238749A (en) * | 2018-09-05 | 2019-01-18 | 浦林成山（青岛）工业研究设计有限公司 | A kind of hammering device applied to Tire Modal Testing |
Non-Patent Citations (1)
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| 李超: "滚动轮胎的模态特性研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111189598A (en) * | 2019-12-31 | 2020-05-22 | 中汽研汽车检验中心（天津）有限公司 | Free modal test method for car wheel |
| CN111189598B (en) * | 2019-12-31 | 2022-06-14 | 中汽研汽车检验中心（天津）有限公司 | Free modal test method for car wheel |
| CN114486294A (en) * | 2022-01-24 | 2022-05-13 | 宁波中大力德智能传动股份有限公司 | Driving wheel load loading testing device |
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Application publication date: 20190621 |
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